Are the people arguing with you about Luke 21 trying to say that Jesus has already returned "in a cloud with power and great glory?"
Seems to me, they have to, if they think all of his prophesy there has to do with the generation of people extant at that time.
= = = = = =
DON'T YOU KNOW????
DIDN'T YOU GET THE MEMO???
Were you LEFT BEHIND????
OF COURSE JESUS RETURNED IN GREAT POWER AND GLORY in 33.2 AD.
Of course He had to transmorgify into a tiny little gnome to fit inside the narrow, rigid, tidy little boxes of the CONTRARIAN REPLACEMENTARIANS . . . but that was fine with them. They just stuffed Him in his tidy little box at the foot of Calvin's casket and have pontificated on a plenty as though nothing happened.
It sure is a wonder why any Christian would want to say, "I am a follower of {Paul, Apollos, Calvin, Luther, the Pope, whomever}" when we have the Word of God given so directly and so very, very painstakingly to us and the Holy Spirit to interpret for us.